12/08/2016. Jockeys race their horses along the beach during the beach horse races on August 12, 2016 in Sanlucar de Barrameda, Cadiz province, Spain. Sanlucar de Barrameda yearly horse races traditional origin started with informal races of horse's owners delivering fish from the port to the markets. But the first formal races date back to 1845 and they are the second oldest in Spain, after Madrid. The horse races take place near the Guadalquivir river mouth during August